修改int 未 Integer

hx-sale/src/main/java/com/fjhx/sale/entity/contract/po/Contract.java

@@ -216,7 +216,7 @@ public class Contract extends BasePo {
      */
     @TableField(fill = FieldFill.INSERT)
     @Version
-    private int version;
+    private Integer version;
 
     /**
      * 合同产品列表